Radiolaria - Wikipedia
WEBThe Radiolaria, also called Radiozoa, are protozoa of diameter 0.1–0.2 mm that produce intricate mineral skeletons, typically with a central capsule dividing the cell into the inner and outer portions of endoplasm and ectoplasm. The elaborate mineral skeleton is usually made of silica. They are found as zooplankton throughout the global ocean.
Radiolarian | Marine Protists, Plankton, Microscopic | Britannica
WEBradiolarian, any protozoan of the class Polycystinea (superclass Actinopoda), found in the upper layers of all oceans. Radiolarians, which are mostly spherically symmetrical, are known for their complex and beautifully sculptured, though minute, skeletons, referred to …
Introduction to the Radiolaria - University of California Museum …
WEBRadiolaria can range anywhere from 30 microns to 2 mm in diameter. Their skeletons tend to have arm-like extensions that resemble spikes, which are used both to increase surface area for buoyancy and to capture prey. Most radiolarians are planktonic, and get around by coasting along ocean currents.
Diversity and ecology of Radiolaria in modern oceans - PMC
WEBApr 24, 2022 · But what exactly are Radiolaria? While the scientific definition has varied through time, and in particular during the last two decades, Radiolaria can be said to be a group of diverse unicellular eukaryotes (also known as protists) often bearing delicate and elegant mineral skeletons.
Biogeography and diversity of Collodaria (Radiolaria) in the global ...
WEBMar 24, 2017 · 12 April 2024. Introduction. Radiolarians are skeleton-bearing marine heterotrophic protists belonging to the eukaryotic phylum Retaria, which is included within the super-group Rhizaria (...
Radiolaria.org
WEBRadiolaria.org is an online database containing information about radiolarians - fossil and recent, with images, descriptions, references, synonyms and links to other online resources. more ... What are Radiolarians. Radiolaria are holoplanktonic protozoa widely distributed in …
Life History and Ecology of the Radiolaria - University of California ...
WEBRadiolaria: Life History and Ecology. Many species of Radiolaria inhabit masses of ocean water, and occupy faunal niches or biographical zones comparable with other zooplankton. Radiolarian species are non-motile; they drift along water currents while those currents compartmentalize the ocean into finer ecological domains.
Unraveling the Mysteries of Radiolarians | AMNH
WEBWhile still poorly understood in many ways, radiolarians are thought to hold significant clues to the evolution of life on Earth, as well as insights into changing climatic conditions over time. They have existed for at least 550 million years and are found in all the world’s oceans and other bodies of saltwater, from the surface to the seafloor.
Radiolaria.org > What are radiolarians
WEBRadiolaria are protozoa distinguished 1) by segregation of their soft anatomy into the central capsule, containing the endoplasm, and the surrounding ectoplasm (or calymma), and 2) by their siliceous (opaline) skeletons of the large majority of species. Radiolarians have existed since the beginning of the Paleozoic era, producing an astonishing ...
Radiolaria | SpringerLink
WEB300 Accesses. Download reference work entry PDF. Radiolarians are marine protozoa with a geological record ranging from Precambrian to Present. Radiolarians are exclusively marine and are found in all the oceans, in all temperature zones and at all depths.
Skip to content